12% Ovality. e.g. 32T ring has major diameter of 34T and minor diameter of 30T.
Clocking of crank arm positions major diamater in the optimum position of your power stroke (116 degrees)
CNC machined in-house in the UK from 7075T6 Aluminium.
Anodised: Black, Blue, Red, Purple, Orange, Silver, Gold
Will work with 9, 10 & 11 speed chains.